168670649 has 8 divisors (see below), whose sum is σ = 193351488. Its totient is φ = 144136080.

The previous prime is 168670643. The next prime is 168670687. The reversal of 168670649 is 946076861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168670649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168670643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34082 + ... + 38715.

It is an arithmetic number, because the mean of its divisors is an integer number (24168936).

Almost surely, 2^168670649 is an apocalyptic number.

It is an amenable number.

168670649 is a deficient number, since it is larger than the sum of its proper divisors (24680839).

168670649 is an equidigital number, since it uses as much as digits as its factorization.

168670649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73135.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 168670649 is about 12987.3264762229. The cubic root of 168670649 is about 552.5180944505.

The spelling of 168670649 in words is "one hundred sixty-eight million, six hundred seventy thousand, six hundred forty-nine".